bug fix

paddle/fluid/operators/listen_and_serv_op.cc

@@ -300,8 +300,10 @@ void ListenAndServOp::RunImpl(const framework::Scope &scope,
   }
 
   int checkpoint_point_block_id = Attr<int>(kCheckpointBlockId);
+  auto *ctx = new ExecutorPrepareContext(*program, checkpoint_point_block_id);
+
   std::shared_ptr<framework::ExecutorPrepareContext> ckpt_pre_context =
-      executor.Prepare(*program, checkpoint_point_block_id);
+      std::shared_ptr<ExecutorPrepareContext>(ctx);
 
   auto f =
       std::bind(FillRequestCtx, std::placeholders::_1, &recv_scope, &dev_ctx,